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Nuclei Templates

Spoofable SPF Records with PTR Mechanism

ID: spoofable-spf-records-ptr

Severity: info

Author: binaryfigments

Tags: dns,spf

Description

Section titled “Description”

SPF records in DNS containing a PTR mechanism are spoofable.

YAML Source

Section titled “YAML Source”
id: spoofable-spf-records-ptr


info:
  name: Spoofable SPF Records with PTR Mechanism
  author: binaryfigments
  severity: info
  description: SPF records in DNS containing a PTR mechanism are spoofable.
  reference:
    - https://www.digitalocean.com/community/tutorials/how-to-use-an-spf-record-to-prevent-spoofing-improve-e-mail-reliability
  classification:
    cwe-id: CWE-200
  metadata:
    max-request: 1
  tags: dns,spf


dns:
  - name: "{{FQDN}}"
    type: TXT
    matchers:
      - type: word
        words:
          - "v=spf1"
          - " ptr "
        condition: and
# digest: 490a0046304402205db2464b5a702857d30775b25f61f312a8fb1e6586cef7fd3e226b1e68202d9d02203ce1ee037b0e8c4be474aa4730a60fe546824f5f8e5a942f2f0d2ee2165bfd11:922c64590222798bb761d5b6d8e72950

Guide to check the vulnerabilities

Section titled “Guide to check the vulnerabilities”

This template is used to detect vulnerabilities in web applications. It can be used with the Nuclei tool to scan for specific patterns or behaviors.

Terminal window
$ nuclei -u "URL" -t "dns/spoofable-spf-records-ptr.yaml"

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